“…Most studies were laboratory-based, repeated measures designs where comfort was measured under different footwear and/or insole conditions [14, 15, 18, 20-23, 25-30, 33, 35-39, 41, 43-48, 50-55, 57, 58, 60-71, 73-79, 81-87, 89, 90, 93, 97, 98, 100-105], but there were also 13 surveys [1, 3, 9-11, 16, 19, 24, 40, 56, 88, 92, 96], eight clinical trials [12,34,42,49,59,94,95,99], three qualitative studies [13,17,91] and three reviews [5,7,72]. Sample size ranged from 5 to 1524, and primarily included healthy young adults [10, 14, 15, 17, 18, 22, 28, 31, 32, 35, 37, 43-46, 48, 50, 53, 54, 56, 58, 60, 64, 67, 74-76, 78, 79, 83, 88, 90, 101-104], but also children [71,91], older people [1,52,63,76], participants with medical conditions (such as diabetes [16,27,68,105], rheumatoid arthritis [29], patellofemoral pain [73], plantar fasciitis [99], hallux valgus [93] and non-specific musculoskeletal disorders/symptoms [25,95]), specific occupational groups (such as military personnel [42,69,85,89], factory workers [9,12], school teachers [11], kitchen staff…”